Home / 99,661.20-137,533.53-54,338.82

Finding the Fourth Proportional to 99,661.20, 137,533.53 and 54,338.82

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Solution

The fourth proportional to 99,661.20, 137,533.53 and 54,338.82 is: 74,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.20 : 137,533.53 = 54,338.82 : x
  2. Step 2: Convert to fraction form
    99,661.20/137,533.53 = 54,338.82/x
  3. Step 3: Cross multiply
    99,661.20x = 137,533.53 × 54,338.82
  4. Step 4: Simplify right side
    99,661.20x = 7,473,409,730.63
  5. Step 5: Solve for x
    x = 7,473,409,730.63/99,661.20
  6. Step 6: Final answer
    x = 74,988.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.